H12-891_V1.0 Exam Questions
768 real H12-891_V1.0 exam questions with expert-verified answers and explanations. Page 2 of 16.
- Question #51QoS and Network Security
Which of the following is WRED's drop probability for packets exceeding the high threshold?
WREDQoScongestion avoidancedrop probability - Question #52Advanced IP Routing and Multicast
As shown in the figure, IPv6 is deployed in a campus for business testing. There are 4 routers in the network, running OSPFv3 to realize network interconnection. Which of the follo...
OSPFv3LSA typesLink-LSAIPv6 - Question #53Network Operation and Maintenance and Troubleshooting
When troubleshooting the problem that the same VLAN cannot communicate with each other, which of the following methods is not necessary?
VLANtroubleshootingdisplay commandsintra-VLAN communication - Question #54MPLS and VPN Technologies
In 6PE networking scenarios, data packets usually carry two layers of label information when forwarded by PE. The inner label information is allocated by which of the following pro...
6PEMP-BGPMPLS labelIPv6 over MPLS - Question #55Advanced IP Routing and Multicast
Which of the following descriptions of OSPFv3 Router ID is correct?
OSPFv3Router ID32-bitOSPF - Question #56Advanced IP Routing and Multicast
In a broadcast network, if the DR priority of the interconnection interfaces of two routers is set to 0, which state will the OSPF neighbor stay in?
OSPFDR electionneighbor statebroadcast network - Question #57Data Center Network Technologies
In the VXLAN network, which of the following is used to implement traffic access to the VXLAN network and can also be used to communicate with the same subnet within the same VXLAN...
VXLANL2 GatewayNVE interfacesame-subnet communication - Question #58Network Architecture and Design
In the design of network access control in large and medium-sized campuses, when a PC terminal is connected to an IP phone, which of the following authentication methods can be sel...
802.1XMAC authenticationhybrid authenticationcampus access control - Question #59Network Architecture and Design
As shown in the figure, R1 and R2 establish a GRE tunnel. If it is required that R1 "ping10.3.1.1" can ping successfully, which of the following commands needs to be configured on...
GRE tunnelstatic routingtunnel interfacerouting configuration - Question #60QoS and Network Security
Which of the following descriptions about AH (Authentication Header, Packet Authentication Header Protocol) is wrong?
AH protocolIPSecpacket authenticationdata integrity - Question #61MPLS and VPN Technologies
On a router IPv6 SR-Policy routing information. Which of the following does [10] mean?
SR-PolicySRv6DistinguisherIPv6 routing - Question #62MPLS and VPN Technologies
OSPF supports SR-MPLS through which of the following types of LSAs?
OSPFSR-MPLSOpaque LSAType10 LSA - Question #63SDN and Network Automation
When using Huawei iMaster When NCE-IP configures a SRMPLSTE tunnel, which of the following protocols does the controller use to collect network topology information?
BGP-LSSR-MPLS TEiMaster NCE-IPtopology collection - Question #64MPLS and VPN Technologies
SRv6 (SegmentRoutingIPv6) is a technical architecture designed to forward data packets on IPv6 networks based on the source routing concept. Which of the following descriptions is...
SRv6source routingSRHIPv6 forwarding - Question #65MPLS and VPN Technologies
As shown in the figure, Site1 and Site2 need to achieve mutual access through the operator's BGP/MPLSIPVPN. It is known that the public network tunnel between PE1 and PE2 has been...
BGP/MPLS IP VPNlabel stackingMP-IBGPPE-P forwarding - Question #66QoS and Network Security
The network administrator is trying out ACL and only wants to match the four routing entries with Num numbers 1, 3, 5, and 7 in the figure. How many ACL rules does the network admi...
ACLwildcard maskroute filteringprefix matching - Question #67QoS and Network Security
Man-in-the-middle attacks or IP/MAC Stooting attacks can lead to information leakage and other hazards, and are relatively common on intranets. Which of the following is a configur...
DHCP SnoopingDAIIP Source GuardMITM prevention - Question #68MPLS and VPN Technologies
In the MPLS network, there are different types of operations for labels. Which of the following represents the meaning of the "pop" action?
MPLS label operationspop actionlabel stackLSR - Question #69Advanced IP Routing and Multicast
Configure ISISIPv6cost50 directly under the interface. Which of the following does this command mean?
IS-ISIPv6 costLevel-1Level-2 - Question #70Advanced IP Routing and Multicast
An engineer used two routers to conduct IPv6 service testing and simulated the interconnection between the headquarters and branches by running BGP4+. As shown in the figure, an en...
BGP4+IPv6 BGPUpdate messageMP_REACH_NLRI - Question #71MPLS and VPN Technologies
A company's headquarters network and branch network are interconnected through the Internet. If you want to use VPN technology to achieve safe and reliable data transmission betwee...
IPsec VPNVPN selectionsite-to-site VPNsecure tunneling - Question #72SDN and Network Automation
Via iMaster in the virtualized campus network scenario deployed by NCE-Campus, after creating a VN, you also need to configure VN interworking. Which of the following descriptions...
iMaster NCE-CampusVN interworkingVPN-Instancestatic route - Question #73Data Center Network Technologies
As shown in the figure, SW1 and SW2 use asymmetric IRB forwarding. When PC1 communicates with PC2, which of the following is the destination MAC address of the original data frame...
VXLANasymmetric IRBVTEPMAC forwarding - Question #74Network Operation and Maintenance and Troubleshooting
The output information of a certain router is as shown in the figure. Which item is wrong in the following description?
GRE tunnelKeepalivetunnel configurationoutput analysis - Question #75MPLS and VPN Technologies
VPDN refers to a virtual private network built on a public network. Which of the following belongs to VPDN?
VPDNL2TPVPN classificationvirtual dial-up - Question #76MPLS and VPN Technologies
As shown in the figure, a certain L3VPN Over SRv6BE networking is used. PE1 and PE2 pass the BGP neighbor relationship through the loopback0 interface. If you want to realize the i...
L3VPN over SRv6 BEPrefix SIDBGP vpnv4SRv6 tunnel - Question #77MPLS and VPN Technologies
According to different implementation levels, wide area VPN can be divided into L2VPN and L3VPN. Which of the following descriptions of wide-area VPNs is wrong?
EVPNL2VPNL3VPNBGP VPNv4/v6 - Question #78MPLS and VPN Technologies
If you want to implement L3VPNv4 over SRv6 BE, you need to execute the segment -routing ipv6 best-effort command in which of the following command views?
L3VPNv4 over SRv6 BEsegment-routing ipv6BGP VPN instancecommand view - Question #79SDN and Network Automation
The message information of the VLAN configuration delivered by the NETCONF protocol is as follows. Which of the following descriptions is wrong?
NETCONFedit-configtarget configurationVLAN provisioning - Question #80Advanced IP Routing and Multicast
Which of the following description of ABR in OSPF is wrong?
OSPF ABRLSA typesType3 LSAarea boundary router - Question #81Advanced IP Routing and Multicast
Which of the description of LSA is correct?
OSPFLSAlink state databaseLS type - Question #82Advanced IP Routing and Multicast
Which of the following OSPF areas can only reach other areas through the default route?
OSPFtotally stub areaarea typesdefault route - Question #83Advanced IP Routing and Multicast
Which of the following descriptions of OSPF packets is wrong?
OSPFDD packetsHello messagesLSA headers - Question #84Advanced IP Routing and Multicast
Which of the following types of LSAs can carry tag information for external routes?
OSPFLSA5external routesroute tags - Question #85Advanced IP Routing and Multicast
In which of the following situations will a router running IS-IS not generate LSPs?
IS-ISLSP generationsysnameneighbor adjacency - Question #86Advanced IP Routing and Multicast
A router is running ISIS, and its output information is as shown in the figure. Which of the following statements is wrong?
IS-ISDISsystem-IDarea code - Question #87Advanced IP Routing and Multicast
Which of the following description of Local-Preference is correct?
BGPLocal-Preferencepath attributesAS routing - Question #88Advanced IP Routing and Multicast
Which of the following is about display bgp routing The correct description of the content output by the table command?
BGProuting tableMEDAS path - Question #89Advanced IP Routing and Multicast
Regarding the summary automatic command and the description of BGP aggregation, which of the description is wrong?
BGProute aggregationsummary automaticrouting policy - Question #90Advanced IP Routing and Multicast
Filterpolicy2000export is configured in the IS-IS process. Which statement is wrong about the function of this command?
IS-ISfilter-policyroute filteringexport policy - Question #91Advanced IP Routing and Multicast
The following is part of the output configuration of the Huawei router. Which of the description of this part of the configuration is correct? [Huawei] ip ip-prefix P1 index 5 deny...
BGPip-prefix listroute filteringpeer policy - Question #92Data Center Network Technologies
Which of the following statements about stacked MAD detection is wrong?
MAD detectionstackingproxy detectiondirect connection - Question #93Network Architecture and Design
As shown in the figure, in a network running the RSTP protocol, the original root port of the SWC fails and the port is in Down state. At this time, which of the following processe...
RSTProot port failurealternate portspanning tree convergence - Question #94Advanced IP Routing and Multicast
As shown in the figure, R1 is configured. Which of the following descriptions of IS-IS process 1 is correct?
IS-ISLevel-1-2device typeIS-IS process - Question #95MPLS and VPN Technologies
The output information of a certain router is as shown in the figure. Which item is wrong in the following description?
GRE tunnelkeepalivekey verificationtunnel parameters - Question #96MPLS and VPN Technologies
All routers in a network enable SR-MPLS, and R1 encapsulates the label information of a data packet as shown in the figure. Which of the following MPLS labels does the data packet...
SR-MPLSlabel forwardingsegment routinglabel stack - Question #97MPLS and VPN Technologies
R1, R2, and R3 enable SR-MPLS based on IS-IS. By default, which of the following is the outgoing label of the R1 device when it reaches 10.0.3.3? (The prefix sid of 10.0.3.3 is 100...
SR-MPLSoutgoing labelprefix SIDIS-IS - Question #98MPLS and VPN Technologies
Which of the following protocols does SR-MPLS TE use to allocate MPLS labels?
SR-MPLS TEIGPlabel allocationsegment routing - Question #99MPLS and VPN Technologies
After configuring the command as shown in the figure on a router, which of the following is the value range of the static SID under the locator?
SRv6locatorstatic SIDIPv6 addressing - Question #100MPLS and VPN Technologies
SR-MPLS Policy can use BGP extensions to transmit tunnel information, as shown in the figure. Among them, which of the following parameters does SR-MPLS Policy rely on for optimiza...
SR-MPLS PolicyPreferenceBGP extensionpath selection